67% (2017)

53% (1994)

54% (2004)

54% (2005)

33% (2009)

49% (1998)

68% (1996)

61% (2001)

57% (1994)

60% (2007)

64% (1990)

59% (1998)

52% (1989)

54% (1999)

59% (2006)

54% (1992)

49% (1996)

61% (2001)

62% (1990)

63% (2001)